diff options
Diffstat (limited to 'drivers/net/sfc/falcon.c')
| -rw-r--r-- | drivers/net/sfc/falcon.c | 179 |
1 files changed, 141 insertions, 38 deletions
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c index 448bba9eed09..f09eded40fba 100644 --- a/drivers/net/sfc/falcon.c +++ b/drivers/net/sfc/falcon.c @@ -1168,6 +1168,19 @@ void falcon_generate_test_event(struct efx_channel *channel, unsigned int magic) falcon_generate_event(channel, &test_event); } +void falcon_sim_phy_event(struct efx_nic *efx) +{ + efx_qword_t phy_event; + + EFX_POPULATE_QWORD_1(phy_event, EV_CODE, GLOBAL_EV_DECODE); + if (EFX_IS10G(efx)) + EFX_SET_OWORD_FIELD(phy_event, XG_PHY_INTR, 1); + else + EFX_SET_OWORD_FIELD(phy_event, G_PHY0_INTR, 1); + + falcon_generate_event(&efx->channel[0], &phy_event); +} + /************************************************************************** * * Flush handling @@ -1839,40 +1852,61 @@ int falcon_spi_write(const struct efx_spi_device *spi, loff_t start, * ************************************************************************** */ -void falcon_drain_tx_fifo(struct efx_nic *efx) + +static int falcon_reset_macs(struct efx_nic *efx) { - efx_oword_t temp; + efx_oword_t reg; int count; - if ((falcon_rev(efx) < FALCON_REV_B0) || - (efx->loopback_mode != LOOPBACK_NONE)) - return; + if (falcon_rev(efx) < FALCON_REV_B0) { + /* It's not safe to use GLB_CTL_REG to reset the + * macs, so instead use the internal MAC resets + */ + if (!EFX_IS10G(efx)) { + EFX_POPULATE_OWORD_1(reg, GM_SW_RST, 1); + falcon_write(efx, ®, GM_CFG1_REG); + udelay(1000); + + EFX_POPULATE_OWORD_1(reg, GM_SW_RST, 0); + falcon_write(efx, ®, GM_CFG1_REG); + udelay(1000); + return 0; + } else { + EFX_POPULATE_OWORD_1(reg, XM_CORE_RST, 1); + falcon_write(efx, ®, XM_GLB_CFG_REG); + + for (count = 0; count < 10000; count++) { + falcon_read(efx, ®, XM_GLB_CFG_REG); + if (EFX_OWORD_FIELD(reg, XM_CORE_RST) == 0) + return 0; + udelay(10); + } - falcon_read(efx, &temp, MAC0_CTRL_REG_KER); - /* There is no point in draining more than once */ - if (EFX_OWORD_FIELD(temp, TXFIFO_DRAIN_EN_B0)) - return; + EFX_ERR(efx, "timed out waiting for XMAC core reset\n"); + return -ETIMEDOUT; + } + } /* MAC stats will fail whilst the TX fifo is draining. Serialise * the drain sequence with the statistics fetch */ spin_lock(&efx->stats_lock); - EFX_SET_OWORD_FIELD(temp, TXFIFO_DRAIN_EN_B0, 1); - falcon_write(efx, &temp, MAC0_CTRL_REG_KER); + falcon_read(efx, ®, MAC0_CTRL_REG_KER); + EFX_SET_OWORD_FIELD(reg, TXFIFO_DRAIN_EN_B0, 1); + falcon_write(efx, ®, MAC0_CTRL_REG_KER); - /* Reset the MAC and EM block. */ - falcon_read(efx, &temp, GLB_CTL_REG_KER); - EFX_SET_OWORD_FIELD(temp, RST_XGTX, 1); - EFX_SET_OWORD_FIELD(temp, RST_XGRX, 1); - EFX_SET_OWORD_FIELD(temp, RST_EM, 1); - falcon_write(efx, &temp, GLB_CTL_REG_KER); + falcon_read(efx, ®, GLB_CTL_REG_KER); + EFX_SET_OWORD_FIELD(reg, RST_XGTX, 1); + EFX_SET_OWORD_FIELD(reg, RST_XGRX, 1); + EFX_SET_OWORD_FIELD(reg, RST_EM, 1); + falcon_write(efx, ®, GLB_CTL_REG_KER); count = 0; while (1) { - falcon_read(efx, &temp, GLB_CTL_REG_KER); - if (!EFX_OWORD_FIELD(temp, RST_XGTX) && - !EFX_OWORD_FIELD(temp, RST_XGRX) && - !EFX_OWORD_FIELD(temp, RST_EM)) { + falcon_read(efx, ®, GLB_CTL_REG_KER); + if (!EFX_OWORD_FIELD(reg, RST_XGTX) && + !EFX_OWORD_FIELD(reg, RST_XGRX) && + !EFX_OWORD_FIELD(reg, RST_EM)) { EFX_LOG(efx, "Completed MAC reset after %d loops\n", count); break; @@ -1889,21 +1923,39 @@ void falcon_drain_tx_fifo(struct efx_nic *efx) /* If we've reset the EM block and the link is up, then * we'll have to kick the XAUI link so the PHY can recover */ - if (efx->link_up && EFX_WORKAROUND_5147(efx)) + if (efx->link_up && EFX_IS10G(efx) && EFX_WORKAROUND_5147(efx)) falcon_reset_xaui(efx); + + return 0; +} + +void falcon_drain_tx_fifo(struct efx_nic *efx) +{ + efx_oword_t reg; + + if ((falcon_rev(efx) < FALCON_REV_B0) || + (efx->loopback_mode != LOOPBACK_NONE)) + return; + + falcon_read(efx, ®, MAC0_CTRL_REG_KER); + /* There is no point in draining more than once */ + if (EFX_OWORD_FIELD(reg, TXFIFO_DRAIN_EN_B0)) + return; + + falcon_reset_macs(efx); } void falcon_deconfigure_mac_wrapper(struct efx_nic *efx) { - efx_oword_t temp; + efx_oword_t reg; if (falcon_rev(efx) < FALCON_REV_B0) return; /* Isolate the MAC -> RX */ - falcon_read(efx, &temp, RX_CFG_REG_KER); - EFX_SET_OWORD_FIELD(temp, RX_INGR_EN_B0, 0); - falcon_write(efx, &temp, RX_CFG_REG_KER); + falcon_read(efx, ®, RX_CFG_REG_KER); + EFX_SET_OWORD_FIELD(reg, RX_INGR_EN_B0, 0); + falcon_write(efx, ®, RX_CFG_REG_KER); if (!efx->link_up) falcon_drain_tx_fifo(efx); @@ -2030,7 +2082,8 @@ static int falcon_gmii_wait(struct efx_nic *efx) efx_dword_t md_stat; int count; - for (count = 0; count < 1000; count++) { /* wait upto 10ms */ + /* wait upto 50ms - taken max from datasheet */ + for (count = 0; count < 5000; count++) { falcon_readl(efx, &md_stat, MD_STAT_REG_KER); if (EFX_DWORD_FIELD(md_stat, MD_BSY) == 0) { if (EFX_DWORD_FIELD(md_stat, MD_LNFL) != 0 || @@ -2206,10 +2259,59 @@ static int falcon_probe_phy(struct efx_nic *efx) return -1; } - efx->loopback_modes = LOOPBACKS_10G_INTERNAL | efx->phy_op->loopbacks; + if (efx->phy_op->macs & EFX_XMAC) + efx->loopback_modes |= ((1 << LOOPBACK_XGMII) | + (1 << LOOPBACK_XGXS) | + (1 << LOOPBACK_XAUI)); + if (efx->phy_op->macs & EFX_GMAC) + efx->loopback_modes |= (1 << LOOPBACK_GMAC); + efx->loopback_modes |= efx->phy_op->loopbacks; + return 0; } +int falcon_switch_mac(struct efx_nic *efx) +{ + struct efx_mac_operations *old_mac_op = efx->mac_op; + efx_oword_t nic_stat; + unsigned strap_val; + + /* Internal loopbacks override the phy speed setting */ + if (efx->loopback_mode == LOOPBACK_GMAC) { + efx->link_speed = 1000; + efx->link_fd = true; + } else if (LOOPBACK_INTERNAL(efx)) { + efx->link_speed = 10000; + efx->link_fd = true; + } + + efx->mac_op = (EFX_IS10G(efx) ? + &falcon_xmac_operations : &falcon_gmac_operations); + if (old_mac_op == efx->mac_op) + return 0; + + WARN_ON(!mutex_is_locked(&efx->mac_lock)); + + /* Not all macs support a mac-level link state */ + efx->mac_up = true; + + falcon_read(efx, &nic_stat, NIC_STAT_REG); + strap_val = EFX_IS10G(efx) ? 5 : 3; + if (falcon_rev(efx) >= FALCON_REV_B0) { + EFX_SET_OWORD_FIELD(nic_stat, EE_STRAP_EN, 1); + EFX_SET_OWORD_FIELD(nic_stat, EE_STRAP_OVR, strap_val); + falcon_write(efx, &nic_stat, NIC_STAT_REG); + } else { + /* Falcon A1 does not support 1G/10G speed switching + * and must not be used with a PHY that does. */ + BUG_ON(EFX_OWORD_FIELD(nic_stat, STRAP_PINS) != strap_val); + } + + + EFX_LOG(efx, "selected %cMAC\n", EFX_IS10G(efx) ? 'X' : 'G'); + return falcon_reset_macs(efx); +} + /* This call is responsible for hooking in the MAC and PHY operations */ int falcon_probe_port(struct efx_nic *efx) { @@ -2362,6 +2464,10 @@ static struct { EFX_OWORD32(0x000003FF, 0x00000000, 0x00000000, 0x00000000) }, { DP_CTRL_REG, EFX_OWORD32(0x00000FFF, 0x00000000, 0x00000000, 0x00000000) }, + { GM_CFG2_REG, + EFX_OWORD32(0x00007337, 0x00000000, 0x00000000, 0x00000000) }, + { GMF_CFG0_REG, + EFX_OWORD32(0x00001F1F, 0x00000000, 0x00000000, 0x00000000) }, { XM_GLB_CFG_REG, EFX_OWORD32(0x00000C68, 0x00000000, 0x00000000, 0x00000000) }, { XM_TX_CFG_REG, @@ -2687,6 +2793,7 @@ static int falcon_probe_nvconfig(struct efx_nic *efx) static int falcon_probe_nic_variant(struct efx_nic *efx) { efx_oword_t altera_build; + efx_oword_t nic_stat; falcon_read(efx, &altera_build, ALTERA_BUILD_REG_KER); if (EFX_OWORD_FIELD(altera_build, VER_ALL)) { @@ -2694,27 +2801,20 @@ static int falcon_probe_nic_variant(struct efx_nic *efx) return -ENODEV; } + falcon_read(efx, &nic_stat, NIC_STAT_REG); + switch (falcon_rev(efx)) { case FALCON_REV_A0: case 0xff: EFX_ERR(efx, "Falcon rev A0 not supported\n"); return -ENODEV; - case FALCON_REV_A1:{ - efx_oword_t nic_stat; - - falcon_read(efx, &nic_stat, NIC_STAT_REG); - + case FALCON_REV_A1: if (EFX_OWORD_FIELD(nic_stat, STRAP_PCIE) == 0) { EFX_ERR(efx, "Falcon rev A1 PCI-X not supported\n"); return -ENODEV; } - if (!EFX_OWORD_FIELD(nic_stat, STRAP_10G)) { - EFX_ERR(efx, "1G mode not supported\n"); - return -ENODEV; - } break; - } case FALCON_REV_B0: break; @@ -2724,6 +2824,9 @@ static int falcon_probe_nic_variant(struct efx_nic *efx) return -ENODEV; } + /* Initial assumed speed */ + efx->link_speed = EFX_OWORD_FIELD(nic_stat, STRAP_10G) ? 10000 : 1000; + return 0; } |